22335145521 has 32 divisors (see below), whose sum is σ = 32318361600. Its totient is φ = 13638888000.

The previous prime is 22335145501. The next prime is 22335145531. The reversal of 22335145521 is 12554153322.

It is not a de Polignac number, because 22335145521 - 2⁶ = 22335145457 is a prime.

It is a super-2 number, since 2×22335145521² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22335145501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8237356 + ... + 8240066.

It is an arithmetic number, because the mean of its divisors is an integer number (1009948800).

Almost surely, 2^22335145521 is an apocalyptic number.

It is an amenable number.

22335145521 is a deficient number, since it is larger than the sum of its proper divisors (9983216079).

22335145521 is a wasteful number, since it uses less digits than its factorization.

22335145521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4277.

The product of its digits is 36000, while the sum is 33.

Adding to 22335145521 its reverse (12554153322), we get a palindrome (34889298843).

The spelling of 22335145521 in words is "twenty-two billion, three hundred thirty-five million, one hundred forty-five thousand, five hundred twenty-one".